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Diodes Incorporated AH183-PL-B
- Part No.:
- AH183-PL-B
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- 3-SIP
- Datasheet:
-
AH183-PL-B.pdf
- Description:
- MAGNETIC SWITCH UNIPOLAR 3SIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,583
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Product details
Overview
AH183-PL-B from Diodes Incorporated is a micropower, bipolar-operated Hall-effect switch in SIP-3L package, designed for battery-powered portable electronics. It activates low-side output (sinking) under sufficient south-pole magnetic field (Bop = 40–60 Gauss), features 280–500 µA average supply current at 3V, -40°C to +85°C operation, and 0.1 V output on-voltage at 1 mA load - deployed in clamshell phone cover detection and handheld device position sensing.
For engineers reviewing the AH183-PL-B datasheet, AH183-PL-B pinout, AH183-PL-B application, or AH183-PL-B equivalent, this page delivers verified electrical specs, magnetic switching thresholds, SIP-3L terminal mapping, thermal derating curves, and direct alternatives with documented Bop/Brp and power consumption differences.
Technical Context
The AH183 integrates a Hall plate, chopper-stabilized amplifier, offset-canceling circuitry, and open-drain NMOS output driver. Its internal architecture enables stable switching despite mechanical stress and temperature drift, with hysteresis (Bhy ≥10 Gauss) preventing chatter near threshold.
It operates in a pulsed duty cycle (25% typical), enabling ultra-low average current draw. Magnetic polarity sensitivity is package-dependent: SIP-3L responds to south pole on branded side, while SC59 requires north pole - a key layout constraint for mechanical integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V - supports single-cell Li-ion and dual-cell alkaline battery systems without regulation. |
| Output Type | Open-drain NMOS - requires external pull-up; sinks up to 10 mA for direct LED or microcontroller GPIO interfacing. |
| Operation Point (Bop) | 40–60 Gauss (south pole, branded side) - defines minimum field strength to assert output low; sets mechanical air-gap design limit. |
| Release Point (Brp) | 10–30 Gauss - ensures clean turn-off with ≥10 Gauss hysteresis; prevents false triggers from field noise or vibration. |
| Avg. Supply Current | 280–500 µA at 3V - enables multi-year operation in coin-cell–powered devices like smart tags or wearables. |
| Awake Time | ≤100 µs - determines minimum detectable pulse width for speed-sensing applications such as rotary encoder slotted wheels. |
| Operating Temp. | -40°C to +85°C - validated across industrial ambient range; no calibration required over full range. |
Pinout & Package
AH183-PL-B is supplied in SIP-3L (Single In-line Package, 3-lead), a surface-mount package with straight leads optimized for bulk handling. Dimensions: 2.00 mm × 1.15 mm × 0.51 mm (L×W×H), branded top surface indicating active area location.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vdd | Power supply input - must be decoupled with 10–100 nF capacitor near pin for noise immunity. |
| 2 | GND | Ground reference - connects to system ground plane; critical for stable Hall plate biasing. |
| 3 | Output | Open-drain output - sinks current when activated; requires 10–100 kΩ pull-up to Vdd or logic rail. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 280–500 µA avg. supply current enables >5-year battery life in low-duty-cycle cover-detect applications. |
| Offset Canceling Technology | Chopper-stabilized front-end eliminates thermal and process-induced DC offsets, ensuring consistent Bop/Brp across temperature. |
| Superior Temperature Stability | Bop drift < ±10% over -40°C to +85°C - eliminates need for software compensation in consumer-grade designs. |
| Insensitive to Physical Stress | Monolithic construction resists sensitivity shift during PCB flexure or housing snap-fit assembly - critical for clamshell hinge zones. |
| Green Packaging | SIP-3L with lead-free finish, halogen- and antimony-free molding compound - meets RoHS 3 (2015/863/EU) and automotive change-control readiness. |
Applications
| Cover Detection | Rotary Speed Sensing |
|---|---|
|
Use Scenario: Detect open/closed state of flip phone or tablet keyboard cover via magnet proximity. IC Role / Device Role / Timing Role: Digital position sensor providing TTL-compatible enable/disable signal to system controller. Use Value: 280–500 µA avg. current extends battery life beyond 3 years in standby; 100 µs response captures rapid lid motion without missing transitions. |
Use Scenario: Measure RPM of small DC motor or fan using slotted wheel and fixed magnet. IC Role / Device Role / Timing Role: Edge-triggered magnetic zero-crossing detector feeding microcontroller timer capture input. Use Value: 25% duty cycle and 100 µs awake time support up to 250 Hz pulse rate (15,000 RPM for 2-slot wheel) with minimal power overhead. |
| Home Safety Interlock | Portable Device Orientation |
|
Use Scenario: Confirm door closure in smart lock or child-safety cabinet latch before enabling actuator. IC Role / Device Role / Timing Role: Fail-safe proximity switch verifying mechanical engagement prior to power-on sequence. Use Value: 10 Gauss hysteresis prevents nuisance tripping from stray fields; -40°C to +85°C rating ensures reliability in unconditioned indoor environments. |
Use Scenario: Determine orientation (portrait/landscape) of handheld medical monitor or barcode scanner. IC Role / Device Role / Timing Role: Dual-axis position indicator using two AH183 units with orthogonal magnet placement. Use Value: SIP-3L's 2.0 × 1.15 mm footprint allows dense placement; identical Bop/Brp matching between units enables consistent threshold alignment across axes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL3320EUSTT1 | Bop = 30–50 Gauss; Idd(avg) = 3.5 µA; SC70-3 package | Lower power but smaller package limits heat dissipation; not qualified for >85°C ambient | Select for ultra-low-power wearables where SIP-3L board space is constrained and ambient ≤70°C. |
| DRV5013A2QLPGM | Bop = ±23 Gauss; push-pull output; 2.7–38 V supply; SOIC-8 | Wider voltage range and bidirectional sensing, but 2.5 mA Idd disqualifies it for coin-cell use | Choose when system requires north/south polarity detection and higher supply flexibility, accepting higher quiescent current. |
Compared with AL3320EUSTT1 and DRV5013A2QLPGM, AH183-PL-B offers the optimal balance of SIP-3L manufacturability, 280–500 µA battery longevity, and robust 40–60 Gauss switching for cost-sensitive consumer enclosures - without sacrificing thermal margin or requiring external voltage translation.
Availability
AH183-PL-B is available at Aetrix Electronics and suitable for cover detection, rotary speed sensing, home safety interlocks, and portable device orientation requiring stable component supply and long-lifecycle support despite its obsolete status.
Supply support for AH183-PL-B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs, with manufacturing certified to IATF 16949 and product definitions aligned to AEC-Q200 standards.
AH183 belongs to Diodes' CMOS Hall-effect switch product line, engineered specifically for ultra-low-power, high-reliability position sensing in space-constrained, battery-operated consumer and industrial equipment.
FAQ
Is AH183-PL-B still in production?
No - AH183-PL-B is officially obsolete per Diodes' DS31024 Rev. 10 (August 2022). However, Aetrix Electronics maintains legacy inventory with full traceability and provides last-time-buy planning, cross-reference support, and engineering guidance for migration paths to active alternatives.
What is the magnetic polarity requirement for SIP-3L package?
The SIP-3L variant of AH183 activates under a south-pole magnetic field applied to the branded top surface. This is explicitly defined in the datasheet's magnetic characteristics table and differs from the SC59 variant, which requires a north pole for activation.
Can AH183-PL-B drive an LED directly?
Yes - its open-drain NMOS output can sink up to 10 mA. With a 3.3 V supply and 10 kΩ pull-up, connecting an LED (anode to Vdd, cathode to Output) yields ~0.3 V forward drop and ~0.3 mA current, sufficient for status indication without additional drivers.
How does AH183 differ from AH182 in practical use?
AH182 draws only 5–10 µA average current versus AH183's 280–500 µA, making it preferable for multi-year coin-cell applications. However, AH183 offers faster period (200–400 ms vs. 50–100 ms) and higher duty cycle (25% vs. 0.1%), improving responsiveness in dynamic sensing scenarios like speed measurement.
AH183-PL-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 3-SIP
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Unipolar Switch
- Technology:
- Hall Effect
- Polarization:
- South Pole
- Sensing Range:
- 6mT Trip, 1mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 2.5V ~ 5.5V
- Current - Supply (Max):
- 500µA
- Current - Output (Max):
- 10mA
- Output Type:
- Open Drain
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 3-SIP
AH183-PL-B FAQ
1.How can I place an order for AH183-PL-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AH183-PL-B on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AH183-PL-B reliable?
The price and inventory of AH183-PL-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH183-PL-B is usually 5 days.
3.What payment methods are accepted for AH183-PL-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH183-PL-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH183-PL-B?
AH183-PL-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH183-PL-B order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AH183-PL-B?
For technical support, including AH183-PL-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH183-PL-B requirements.
6.How does Aetrix verify that AH183-PL-B is sourced from the original manufacturer or authorized distributors?
All AH183-PL-B products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AH183-PL-B meets industry standards.
7.What is the process for return or replacement of AH183-PL-B?
All AH183-PL-B units undergo pre-shipment inspection (PSI). If there is an issue with AH183-PL-B, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AH183-PL-B part is unused and in its original packaging.
Return procedure for AH183-PL-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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